KIF2A silencing inhibits the proliferation and migration of breast cancer cells and correlates with unfavorable prognosis in breast cancer
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  • 作者：Jianli Wang ; Siqin Ma ; Rong Ma ; Xun Qu ; Wenjun Liu ; Cuixia Lv ; Song Zhao…
  • 关键词：KIF2A ; Breast cancer ; Migration ; Invasion ; Survival ; Marker
  • 刊名：BMC Cancer
  • 出版年：2014
  • 出版时间：December 2014
  • 年：2014
  • 卷：14
  • 期：1
  • 全文大小：1,926 KB
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  • 刊物主题：Cancer Research; Oncology; Stem Cells; Animal Models; Internal Medicine;
  • 出版者：BioMed Central
  • ISSN：1471-2407
文摘
Background Kinesin family member 2a (KIF2A), a type of motor protein found in eukaryotic cells, is associated with development and progression of various human cancers. The role of KIF2A during breast cancer tumorigenesis and progression was studied. Methods Immunohistochemical staining, real time RT-PCR and western blot were used to examine the expression of KIF2A in cancer tissues and adjacent normal tissues from breast cancer patients. Patients-survival in relation to KIF2A expression was estimated using the Kaplan–Meier survival and multivariate analysis. Breast cancer cell line, MDA-MB-231 was used to study the proliferation, migration and invasion of cells following KIF2A-siRNA transfection. Results The expression of KIF2A in cancer tissues was higher than that in normal adjacent tissues from the same patient (P--.05). KIF2A expression in cancer tissue with lymph node metastasis and HER2 positive cancer were higher than that in cancer tissue without (P--.05). A negative correlation was found between KIF2A expression levels in breast cancer and the survival time of breast cancer patients (P--.05). In addition, multivariate analysis indicated that KIF2A was an independent prognostic for outcome in breast cancer (OR: 16.55, 95% CI: 2.216-123.631, P--.006). The proliferation, migration and invasion of cancer cells in vitro were suppressed by KIF2A gene silencing (P--.05). Conclusions KIF2A may play an important role in breast cancer progression and is potentially a novel predictive and prognostic marker for breast cancer.
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